Rudy Giuliani, who was the mayor of New York City on 9/11 (yes, that 9/11) just did the one thing they always tell you not to do about 9/11: he forgot.

While giving a speech ahead of Donald Trump in Ohio today, the former New York mayor stated that Islamic extremists hadn't carried out any attacks in the US before Obama became President. In 2008. Seven years after 9/11.

"Under those eight years, before Obama came along, we didn’t have any successful radical Islamic terrorist attack in the United States," said Giuliani. "They all started when Clinton and Obama got into office."

Sources: Talking Points Memo